10 years agoblock: fix oops with block tag queueing
James Bottomley [Wed, 27 May 2009 12:17:08 +0000]
block: fix oops with block tag queueing

commit e8939a50466fd963eb1ba9118c34b9ffb7ff6aa6
Author: Tejun Heo <tj@kernel.org>
Date:   Fri May 8 11:54:16 2009 +0900

    block: implement and enforce request peek/start/fetch

Added a BUG_ON(blk_queued_rq(req)) to the top of blk_finish_req().
Unfortunately, this checks whether req->queuelist is empty.  This list
is doing double duty both as the queue list and the tag list, so tagged
requests come in here with this not empty and boom (the tag list is
emptied by blk_queue_end_tag() lower down).

Fix this by moving the BUG_ON to below the end tag we also seem
vulnerable to this in blk_requeue_request() as well.  I think all uses
of blk_queued_rq() need auditing because the check is clearly wrong in
the tagged case.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoide-disk: fix missing max_sectors accessor function
Martin K. Petersen [Sat, 23 May 2009 06:23:16 +0000]
ide-disk: fix missing max_sectors accessor function

The recent move to accessor functions for querying queue limits
missed an entry in ide-disk.c:

drivers/ide/ide-disk.c: In function ‘ide_disk_setup’:
drivers/ide/ide-disk.c:642: error: ‘struct request_queue’ has no member named ‘max_sectors’

Fix it.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: Export I/O topology for block devices and partitions
Martin K. Petersen [Fri, 22 May 2009 21:17:53 +0000]
block: Export I/O topology for block devices and partitions

To support devices with physical block sizes bigger than 512 bytes we
need to ensure proper alignment.  This patch adds support for exposing
I/O topology characteristics as devices are stacked.

  logical_block_size is the smallest unit the device can address.

  physical_block_size indicates the smallest I/O the device can write
  without incurring a read-modify-write penalty.

  The io_min parameter is the smallest preferred I/O size reported by
  the device.  In many cases this is the same as the physical block
  size.  However, the io_min parameter can be scaled up when stacking
  (RAID5 chunk size > physical block size).

  The io_opt characteristic indicates the optimal I/O size reported by
  the device.  This is usually the stripe width for arrays.

  The alignment_offset parameter indicates the number of bytes the start
  of the device/partition is offset from the device's natural alignment.
  Partition tools and MD/DM utilities can use this to pad their offsets
  so filesystems start on proper boundaries.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: Expose stacked device queues in sysfs
Martin K. Petersen [Fri, 22 May 2009 21:17:52 +0000]
block: Expose stacked device queues in sysfs

Currently stacking devices do not have a queue directory in sysfs.
However, many of the I/O characteristics like sector size, maximum
request size, etc. are queue properties.

This patch enables the queue directory for MD/DM devices.  The elevator
code has been modified to deal with queues that do not have an I/O
scheduler.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: Move queue limits to an embedded struct
Martin K. Petersen [Fri, 22 May 2009 21:17:51 +0000]
block: Move queue limits to an embedded struct

To accommodate stacking drivers that do not have an associated request
queue we're moving the limits to a separate, embedded structure.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: Use accessor functions for queue limits
Martin K. Petersen [Fri, 22 May 2009 21:17:50 +0000]
block: Use accessor functions for queue limits

Convert all external users of queue limits to using wrapper functions
instead of poking the request queue variables directly.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: Do away with the notion of hardsect_size
Martin K. Petersen [Fri, 22 May 2009 21:17:49 +0000]
block: Do away with the notion of hardsect_size

Until now we have had a 1:1 mapping between storage device physical
block size and the logical block sized used when addressing the device.
With SATA 4KB drives coming out that will no longer be the case.  The
sector size will be 4KB but the logical block size will remain
512-bytes.  Hence we need to distinguish between the physical block size
and the logical ditto.

This patch renames hardsect_size to logical_block_size.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoMerge branch 'master' into for-2.6.31
Jens Axboe [Fri, 22 May 2009 18:28:35 +0000]
Merge branch 'master' into for-2.6.31

Conflicts:
drivers/ide/ide-io.c

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoMerge branch 'master' into for-2.6.31
Jens Axboe [Fri, 22 May 2009 18:25:34 +0000]
Merge branch 'master' into for-2.6.31

Conflicts:
drivers/block/hd.c
drivers/block/mg_disk.c

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke...
Linus Torvalds [Fri, 22 May 2009 15:41:13 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/ryusuke/nilfs2

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: fix memory leak in nilfs_ioctl_clean_segments

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
Linus Torvalds [Fri, 22 May 2009 15:22:39 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/bart/ide-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  via82cxxx: Add VIA VX855 PCI Device ID
  ide: report timeouts in ide_busy_sleep()
  ide: improve failed opcode reporting
  ide: fix printk() levels in ide_dump_ata[pi]_error()
  ide: fix OOPS during ide-cd error recovery
  ide: fix 40-wire cable detection for TSST SH-S202* ATAPI devices (v2)

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Fri, 22 May 2009 14:38:28 +0000]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] fix posix open regression

10 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Fri, 22 May 2009 14:37:42 +0000]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: IP32: Remove unnecessary if not even harmful volatile keywords.
  MIPS: IP32: Fix build error due to uninitialized variable.
  MIPS: Fix sparse warning in incompatiable argument type of clear_user.

10 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Fri, 22 May 2009 14:33:49 +0000]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/maple: Add a quirk to disable MSI for IPR on Bimini

10 years agoMerge branch 'sh/for-2.6.30' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
Linus Torvalds [Fri, 22 May 2009 14:33:38 +0000]
Merge branch 'sh/for-2.6.30' of git://git./linux/kernel/git/lethal/sh-2.6

* 'sh/for-2.6.30' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  video: stop sh_mobile_lcdcfb only if started
  sh: ap325 camera without i2c driver fix

10 years agoipmi: fix ipmi_si modprobe hang
Corey Minyard [Wed, 20 May 2009 18:36:17 +0000]
ipmi: fix ipmi_si modprobe hang

Instead of queuing IPMB messages before channel initialization, just
throw them away.  Nobody will be listening for them at this point,
anyway, and they will clog up the queue and nothing will be delivered
if we queue them.

Also set the current channel to the number of channels, as this value
is used to tell if the channel information has been initialized.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Ferenc Wagner <wferi@niif.hu>
Cc: Dan Frazier <dannf@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agovia82cxxx: Add VIA VX855 PCI Device ID
Harald Welte [Fri, 22 May 2009 14:23:39 +0000]
via82cxxx: Add VIA VX855 PCI Device ID

This patch adds the PCI Device ID 0xc409 to the PCI ID table of via82cxxx.c,
as well as the 0x8409 south bridge ID.

This is required to make the IDE driver work on the VX855/VX875 integrated
chipset.

Signed-off-by: Harald Welte <HaraldWelte@viatech.com>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Bruce Chang <BruceChang@via.com.tw>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

10 years agoide: report timeouts in ide_busy_sleep()
Bartlomiej Zolnierkiewicz [Fri, 22 May 2009 14:23:38 +0000]
ide: report timeouts in ide_busy_sleep()

* change 'hwif' argument to 'drive'
* report an error on timeout

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

10 years agoide: improve failed opcode reporting
Bartlomiej Zolnierkiewicz [Fri, 22 May 2009 14:23:38 +0000]
ide: improve failed opcode reporting

Nowadays we (almost) always store the currently executing command
in hwif->cmd so we can use it for the failed opcode reporting.

Cc: Martin Lottermoser <Martin.Lottermoser@t-online.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

10 years agoide: fix printk() levels in ide_dump_ata[pi]_error()
Bartlomiej Zolnierkiewicz [Fri, 22 May 2009 14:23:37 +0000]
ide: fix printk() levels in ide_dump_ata[pi]_error()

Fixes "<3>" in error messages like this one:

hdc: cdrom_decode_status: error=0x40 <3>{ LastFailedSense=0x04 }

Reported-by: Martin Lottermoser <Martin.Lottermoser@t-online.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

10 years agoide: fix OOPS during ide-cd error recovery
Bartlomiej Zolnierkiewicz [Fri, 22 May 2009 14:23:37 +0000]
ide: fix OOPS during ide-cd error recovery

On Tuesday 19 May 2009 20:29:28 Martin Lottermoser wrote:

>   hdc: cdrom_decode_status: error=0x40 <3>{ LastFailedSense=0x04 }
>   ide: failed opcode was: unknown
>   hdc: DMA disabled
>   ------------[ cut here ]------------
>   kernel BUG at drivers/ide/ide-io.c:872!

It is possible for ide-cd to ignore ide_error()'s return value under
some circumstances.  Workaround it in ide_intr() and ide_timer_expiry()
by checking if there is a device/port reset pending currently.

Fixes bug #13345:

http://bugzilla.kernel.org/show_bug.cgi?id=13345

Reported-by: Martin Lottermoser <Martin.Lottermoser@t-online.de>
Reported-and-tested-by: Modestas Vainius <modestas@vainius.eu>
Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

10 years agoide: fix 40-wire cable detection for TSST SH-S202* ATAPI devices (v2)
Bartlomiej Zolnierkiewicz [Fri, 22 May 2009 14:23:36 +0000]
ide: fix 40-wire cable detection for TSST SH-S202* ATAPI devices (v2)

Since 2.6.26 we support UDMA66 on ATAPI devices requiring IVB quirk:

  commit 8588a2b732928b343233af9b1855705b8286bed4
  ("ide: add SH-S202J to ivb_list[]")

We also later added support for more such devices in:

  commit e97564f362a93f8c248246c19828895950341252
  ("ide: More TSST drives with broken cable detection")

and in:

  commit 3ced5c49bd2d1f2c7f769e3a54385883de63a652
  ("ide: add TSSTcorp CDDVDW SH-S202H to ivb_list[]")

It turns out that such devices lack cable detection altogether
(which in turn results in incorrect detection of 40-wire cables
by our current cable detection strategy) so always handle them
by trusting host-side cable detection only.

v2:
Model detection fixup from Martin.

Reported-and-tested-by: Martin Lottermoser <Martin.Lottermoser@t-online.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

10 years agoMIPS: IP32: Remove unnecessary if not even harmful volatile keywords.
Ralf Baechle [Fri, 22 May 2009 09:58:43 +0000]
MIPS: IP32: Remove unnecessary if not even harmful volatile keywords.

They are unneeded and as the issue fixed in lmo commit
63f7ec59053e3f850ab67a9938e631bcba64c6ce shows even harmful.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: IP32: Fix build error due to uninitialized variable.
Ralf Baechle [Fri, 22 May 2009 09:48:17 +0000]
MIPS: IP32: Fix build error due to uninitialized variable.

CC arch/mips/sgi-ip32/ip32-reset.o
cc1: warnings being treated as errors
arch/mips/sgi-ip32/ip32-reset.c: In function 'debounce':
arch/mips/sgi-ip32/ip32-reset.c:97: error: 'reg_a' is used uninitialized in this function

The issues is old but due to the volatile keyword gcc older than 4.4 did
not warn about this obvious bug.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Fix sparse warning in incompatiable argument type of clear_user.
Wu Zhangjin [Wed, 20 May 2009 21:50:01 +0000]
MIPS: Fix sparse warning in incompatiable argument type of clear_user.

The type of the second argument of access_ok should be (void __user *).
The unnecessary conversion of the clear_user address argument was causing
sparse to emit warnings on the __chk_user_ptr check.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agonilfs2: fix memory leak in nilfs_ioctl_clean_segments
Ryusuke Konishi [Fri, 22 May 2009 11:36:21 +0000]
nilfs2: fix memory leak in nilfs_ioctl_clean_segments

This fixes a new memory leak problem in garbage collection.  The
problem was brought by the bugfix patch ("nilfs2: fix lock order
reversal in nilfs_clean_segments ioctl").

Thanks to Kentaro Suzuki for finding this problem.

Reported-by: Kentaro Suzuki <k_suzuki@ms.sylc.co.jp>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

10 years agoxen-blkfront: beyond ARRAY_SIZE of info->shadow
Roel Kluin [Fri, 22 May 2009 07:25:32 +0000]
xen-blkfront: beyond ARRAY_SIZE of info->shadow

Do not go beyond ARRAY_SIZE of info->shadow
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agopowerpc/maple: Add a quirk to disable MSI for IPR on Bimini
Michael Ellerman [Thu, 21 May 2009 19:10:23 +0000]
powerpc/maple: Add a quirk to disable MSI for IPR on Bimini

Something in the HW or FW setup is busted and MSIs aren't working with
IPR on Bimini, so until we figure out exaxtly what's up, we quirk them
out

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

10 years agovideo: stop sh_mobile_lcdcfb only if started
Magnus Damm [Wed, 20 May 2009 14:34:43 +0000]
video: stop sh_mobile_lcdcfb only if started

This patch fixes the LCDC driver to avoid calling the
function sh_mobile_lcdc_start_stop(priv, 0) unless the
same function has been called before to start the LCDC
hardware.

Triggered when sh_mobile_lcdcfb.c failed to probe() due to
missing MSTP clocks.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

10 years agosh: ap325 camera without i2c driver fix
Magnus Damm [Wed, 20 May 2009 14:30:06 +0000]
sh: ap325 camera without i2c driver fix

This patch fixes the ap325rxa ncm03j camera code to handle
the case where no i2c driver is present. Without this fix
i2c_transfer() may be passed NULL as adapter which results
in a crash.

Triggered when i2c-sh_mobile.c failed to probe() due to
missing MSTP clocks.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

10 years ago[CIFS] fix posix open regression
Steve French [Thu, 21 May 2009 22:21:53 +0000]
[CIFS] fix posix open regression

Posix open code was not properly adding the file to the
list of open files.  Fix  allocating cifsFileInfo
more than once, and adding twice to flist and tlist.
Also fix mode setting to be done in one place in these
paths.

Signed-off-by: Steve French <sfrench@us.ibm.com>
Reviewed-by: Shirish Pargaonkar <shirishp@us.ibm.com>
Tested-by: Jeff Layton <jlayton@redhat.com>
Tested-by: Luca Tettamanti <kronos.it@gmail.com>

10 years agohugh: update email address
Hugh Dickins [Thu, 21 May 2009 19:33:58 +0000]
hugh: update email address

My old address will shut down in a few days time: remove it from the tree,
and add a tmpfs (shmem filesystem) maintainer entry with the new address.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
Linus Torvalds [Wed, 20 May 2009 23:44:37 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI PM: Fix initialization and kexec breakage for some devices

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
Linus Torvalds [Wed, 20 May 2009 23:40:24 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/drm-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/drm-2.6:
  drm: Copy back ioctl data to userspace regardless of return code.
  drm: Round size of SHM maps to PAGE_SIZE

10 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Wed, 20 May 2009 23:32:19 +0000]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: 64-bit: Fix system lockup.
  MIPS: IP28: Change to build with -mr10k-cache-barrier=store
  MIPS: IP22: Fix hang in power button interrupt handler
  MIPS: IP32: Fix hang on shutdown in power button interrupt handler.

10 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Wed, 20 May 2009 23:30:36 +0000]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm: (25 commits)
  [ARM] 5519/1: amba probe: pass "struct amba_id *" instead of void *
  [ARM] 5517/1: integrator: don't put clock lookups in __initdata
  [ARM] 5518/1: versatile: don't put clock lookups in __initdata
  [ARM] mach-l7200: fix spelling of SYS_CLOCK_OFF
  [ARM] Double check memmap is actually valid with a memmap has unexpected holes V2
  [ARM] realview: fix broadcast tick support
  [ARM] realview: remove useless smp_cross_call_done()
  [ARM] smp: fix cpumask usage in ARM SMP code
  [ARM] 5513/1: Eurotech VIPER SBC: fix compilation error
  [ARM] 5509/1: ep93xx: clkdev enable UARTS
  ARM: OMAP2/3: Change omapfb to use clkdev for dispc and rfbi, v2
  ARM: OMAP3: Fix HW SAVEANDRESTORE shift define
  ARM: OMAP3: Fix number of GPIO lines for 34xx
  [ARM] S3C: Do not set clk->owner field if unset
  [ARM] S3C2410: mach-bast.c registering i2c data too early
  [ARM] S3C24XX: Fix unused code warning in arch/arm/plat-s3c24xx/dma.c
  [ARM] S3C64XX: fix GPIO debug
  [ARM] S3C64XX: GPIO include cleanup
  [ARM] nwfpe: fix 'floatx80_is_nan' sparse warning
  [ARM] nwfpe: Add decleration for ExtendedCPDO
  ...

10 years ago[ARM] 5519/1: amba probe: pass "struct amba_id *" instead of void *
Alessandro Rubini [Wed, 20 May 2009 21:39:08 +0000]
[ARM] 5519/1: amba probe: pass "struct amba_id *" instead of void *

The second argument of the probe method points to the amba_id
structure, so it's better passed with the correct type. None of the
current in-tree drivers uses the pointer, so they have only been
checked for a clean compile.

Change suggested by Russell King.

Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

10 years agodrm: Copy back ioctl data to userspace regardless of return code.
Michel Dänzer [Wed, 20 May 2009 11:32:00 +0000]
drm: Copy back ioctl data to userspace regardless of return code.

Fixes a regression from commit 9d5b3ffc42f7820e8ee07705496955e4c2c38dd9
('drm: fixup some of the ioctl function exit paths'): The vblank ioctl
needs to update the userspace parameters when interrupted by a signal,
which was prevented by the return code check. This could cause the X
server to hang in drmWaitVBlank().

Signed-off-by: Michel Dänzer <daenzer@vmware.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agoMIPS: 64-bit: Fix system lockup.
Greg Ungerer [Wed, 20 May 2009 06:12:32 +0000]
MIPS: 64-bit: Fix system lockup.

The address range size calculation inside local_flush_tlb_kernel_range()
is being truncated by a too small size variable holder on 64-bit systems.
The truncated size can result in an erroneous tlbsize check that means we
sit spinning inside a loop trying to flush a hige number of TLB entries.
This is for all intents and purposes a system hang. Fix by using an
appropriately sized valiable to hold the size.

[Ralf: Greg's original patch submission identified the issue and fixed one
instance in tlb-r4k.c but there there were several more.  For consistency
I also modified tlb-r3k.c even though that file is only used on 32-bit.]

Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: IP28: Change to build with -mr10k-cache-barrier=store
peter fuerst [Sun, 17 May 2009 21:49:45 +0000]
MIPS: IP28: Change to build with -mr10k-cache-barrier=store

Richard Sandiford's new code for inserting the cache-barriers, for GCC
4.3 and above and already incorporated in the current GCC-release, uses
a slightly different option-syntax.

Signed-off-by: peter fuerst <post@pfrst.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: IP22: Fix hang in power button interrupt handler
Ralf Baechle [Sat, 16 May 2009 11:23:45 +0000]
MIPS: IP22: Fix hang in power button interrupt handler

The hang was caused by the use of disable_irq() from the interrupt handler
itself.  Fixed by the use of disable_irq_nosync().  The issue was
triggered by:

    commit 3aa551c9b4c40018f0e261a178e3d25478dc04a9
    Author: Thomas Gleixner <tglx@linutronix.de>
    Date:   Mon Mar 23 18:28:15 2009 +0100

        genirq: add threaded interrupt handler support

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: IP32: Fix hang on shutdown in power button interrupt handler.
Andrew Randrianasulu [Thu, 14 May 2009 18:29:27 +0000]
MIPS: IP32: Fix hang on shutdown in power button interrupt handler.

The hang was caused by the use of disable_irq() from the interrupt handler
itself.  Fixed by the use of disable_irq_nosync().  The issue was
triggered by:

    commit 3aa551c9b4c40018f0e261a178e3d25478dc04a9
    Author: Thomas Gleixner <tglx@linutronix.de>
    Date:   Mon Mar 23 18:28:15 2009 +0100

        genirq: add threaded interrupt handler support

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Wed, 20 May 2009 15:56:10 +0000]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  cdrom: beyond ARRAY_SIZE of viocd_diskinfo
  xen/blkfront: fix warning when deleting gendisk on unplug/shutdown
  xen/blkfront: allow xenbus state transition to Closing->Closed  when not Connected

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Wed, 20 May 2009 15:36:53 +0000]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: fix pointer initialization and checks in cifs_follow_symlink (try #4)

10 years agoblock: change the tag sync vs async restriction logic
Jens Axboe [Wed, 20 May 2009 06:54:31 +0000]
block: change the tag sync vs async restriction logic

Make them fully share the tag space, but disallow async requests using
the last any two slots.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agocdrom: beyond ARRAY_SIZE of viocd_diskinfo
Roel Kluin [Wed, 20 May 2009 06:42:06 +0000]
cdrom: beyond ARRAY_SIZE of viocd_diskinfo

Do not go beyond ARRAY_SIZE of viocd_diskinfo

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
Linus Torvalds [Wed, 20 May 2009 01:44:09 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/sameo/mfd-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: pcf50633: fix unsafe disable_irq()
  mfd: Keep a cache of WM8350 volatile values

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Wed, 20 May 2009 01:43:50 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  ipv4: make default for INET_LRO consistent with help text
  net: fix skb_seq_read returning wrong offset/length for page frag data
  pkt_sched: gen_estimator: use 64 bit intermediate counters for bps
  be2net: add two new pci device ids to pci device table
  sch_teql: should not dereference skb after ndo_start_xmit()
  tcp: fix MSG_PEEK race check
  Doc: fixed descriptions on /proc/sys/net/core/* and /proc/sys/net/unix/*
  Neterion: *FIFO1_DMA_ERR set twice, should 2nd be *FIFO2_DMA_ERR?
  mv643xx_eth: fix PPC DMA breakage
  bonding: fix link down handling in 802.3ad mode
  bridge: fix initial packet flood if !STP
  bridge: relay bridge multicast pkgs if !STP
  NET: Meth: Fix unsafe mix of irq and non-irq spinlocks.
  mlx4_en: Fix not deleted napi structures
  ipconfig: handle case of delayed DHCP server
  netpoll: don't dereference NULL dev from np
  wimax/i2400m: fix device crash: fix optimization in _roq_queue_update_ws

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Wed, 20 May 2009 01:43:21 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  TPM: get_event_name stack corruption

10 years agoMerge branch 'core/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux...
Linus Torvalds [Wed, 20 May 2009 01:42:45 +0000]
Merge branch 'core/urgent' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futex: setup writeable mapping for futex ops which modify user space data

10 years agodrm: Round size of SHM maps to PAGE_SIZE
Benjamin Herrenschmidt [Mon, 18 May 2009 01:56:16 +0000]
drm: Round size of SHM maps to PAGE_SIZE

Currently, userspace can fail to obtain the SAREA mapping (among other
reasons) if it passes SAREA_MAX to drmAddMap without aligning it to the
page size. This breaks for example on PowerPC with 64K pages and radeon
despite the kernel radeon actually doing the right rouding in the first
place.

The way SAREA_MAX is defined with a bunch of ifdef's and duplicated
between libdrm and the X server is gross, ultimately it should be
retrieved by userspace from the kernel, but in the meantime, we have
plenty of existing userspace built with bad values that need to work.

This patch works around broken userspace by rounding the requested size
in drm_addmap_core() of any SHM map to the page size. Since the backing
memory for SHM maps is also allocated within addmap_core, there is no
danger of adjacent memory being exposed due to the increased map size.
The only side effect is that drivers that previously tried to create or
access SHM maps using a size < PAGE_SIZE and failed (getting -EINVAL),
will now succeed at the cost of a little bit more memory used if that
happens to be when the map is created.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agoTPM: get_event_name stack corruption
Eric Paris [Wed, 13 May 2009 16:50:40 +0000]
TPM: get_event_name stack corruption

get_event_name uses sprintf to fill a buffer declared on the stack.  It fills
the buffer 2 bytes at a time.  What the code doesn't take into account is that
sprintf(buf, "%02x", data) actually writes 3 bytes.  2 bytes for the data and
then it nul terminates the string.  Since we declare buf to be 40 characters
long and then we write 40 bytes of data into buf sprintf is going to write 41
characters.  The fix is to leave room in buf for the nul terminator.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>

10 years agoPCI PM: Fix initialization and kexec breakage for some devices
Rafael J. Wysocki [Sun, 17 May 2009 18:17:06 +0000]
PCI PM: Fix initialization and kexec breakage for some devices

Recent PCI PM changes introduced a bug that causes some devices to be
mishandled after kexec and during early initialization.  The failure
scenario in the kexec case is the following:

* Assume a PCI device is not power-manageable by the platform and has
  PCI_PM_CTRL_NO_SOFT_RESET set in PMCSR.
* The device is put into D3 before kexec (using the native PCI PM).
* After kexec, pci_setup_device() sets the device's power state to
  PCI_UNKNOWN.
* pci_set_power_state(dev, PCI_D0) is called by the device's driver.
* __pci_start_power_transition(dev, PCI_D0) is called and since the
  device is not power-manageable by the platform, it causes
  pci_update_current_state(dev, PCI_D0) to be called.  As a result
  the device's current_state field is updated to PCI_D3, in
  accordance with the contents of its PCI PM registers.
* pci_raw_set_power_state() is called and it changes the device power
  state to D0.  *However*, it should also call pci_restore_bars() to
  reinitialize the device, but it doesn't, because the device's
  current_state field has been modified earlier.

To prevent this from happening, modify pci_platform_power_transition()
so that it doesn't use pci_update_current_state() to update the
current_state field for devices that aren't power-manageable by the
platform.  Instead, this field should be updated directly for devices
that don't support the native PCI PM.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agofutex: setup writeable mapping for futex ops which modify user space data
Thomas Gleixner [Mon, 18 May 2009 19:20:10 +0000]
futex: setup writeable mapping for futex ops which modify user space data

The futex code installs a read only mapping via get_user_pages_fast()
even if the futex op function has to modify user space data. The
eventual fault was fixed up by futex_handle_fault() which walked the
VMA with mmap_sem held.

After the cleanup patches which removed the mmap_sem dependency of the
futex code commit 4dc5b7a36a49eff97050894cf1b3a9a02523717 (futex:
clean up fault logic) removed the private VMA walk logic from the
futex code. This change results in a stale RO mapping which is not
fixed up.

Instead of reintroducing the previous fault logic we set up the
mapping in get_user_pages_fast() read/write for all operations which
modify user space data. Also handle private futexes in the same way
and make the current unconditional access_ok(VERIFY_WRITE) depend on
the futex op.

Reported-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
CC: stable@kernel.org

10 years agoFix scripts/setlocalversion with tagged git commit
Nico Schottelius [Sat, 16 May 2009 12:00:56 +0000]
Fix scripts/setlocalversion with tagged git commit

Produce correct output for
- tagged commit (v2.6.30-rc6)
- past tagged commit (v2.6.30-rc5-299-g7c7327d)
- no tag

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agomfd: pcf50633: fix unsafe disable_irq()
Nelson Castillo [Tue, 12 May 2009 20:26:47 +0000]
mfd: pcf50633: fix unsafe disable_irq()

Without this change Openmoko Freerunner (GTA02) bootstrap will deadlock.
As pointed out in other patches this issue is in the wild since the merge
of:

: commit 3aa551c9b4c40018f0e261a178e3d25478dc04a9
: Author: Thomas Gleixner <tglx@linutronix.de>
: Date:   Mon Mar 23 18:28:15 2009 +0100
:
:    genirq: add threaded interrupt handler support
:
:    Add support for threaded interrupt handlers

Signed-off-by: Nelson Castillo <arhuaco@freaks-unidos.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: <balajirrao@openmoko.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

10 years agomfd: Keep a cache of WM8350 volatile values
Mark Brown [Thu, 30 Apr 2009 13:48:36 +0000]
mfd: Keep a cache of WM8350 volatile values

Due to the way that the WM8350 audio driver handles CODEC_ENA many of
the WM8350 audio registers are marked as volatile when they aren't
actually so. Allow the audio driver to see a cache of these values for
inspection during interrupt context.

To do this we need to stop satisfying any bits from volatile registers
from cache - there's no real benefit from doing so anyway, we did the
read already.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

10 years agoMerge branch 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze
Linus Torvalds [Tue, 19 May 2009 18:31:56 +0000]
Merge branch 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze

* 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Fix kind-of-intr checking against number of interrupts
  microblaze: Update Microblaze defconfig

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
Linus Torvalds [Tue, 19 May 2009 18:31:24 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/lrg/voltage-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  regulator: da903x: add missing __devexit_p()

10 years agoAvoid ICE in get_random_int() with gcc-3.4.5
Linus Torvalds [Tue, 19 May 2009 18:25:35 +0000]
Avoid ICE in get_random_int() with gcc-3.4.5

Martin Knoblauch reports that trying to build 2.6.30-rc6-git3 with
RHEL4.3 userspace (gcc (GCC) 3.4.5 20051201 (Red Hat 3.4.5-2)) causes an
internal compiler error (ICE):

    drivers/char/random.c: In function `get_random_int':
    drivers/char/random.c:1672: error: unrecognizable insn:
    (insn 202 148 150 0 /scratch/build/linux-2.6.30-rc6-git3/arch/x86/include/asm/tsc.h:23 (set (reg:SI 0 ax [91])
            (subreg:SI (plus:DI (plus:DI (reg:DI 0 ax [88])
                        (subreg:DI (reg:SI 6 bp) 0))
                    (const_int -4 [0xfffffffffffffffc])) 0)) -1 (nil)
        (nil))
    drivers/char/random.c:1672: internal compiler error: in extract_insn, at recog.c:2083

and after some debugging it turns out that it's due to the code trying
to figure out the rough value of the current stack pointer by taking an
address of an uninitialized variable and casting that to an integer.

This is clearly a compiler bug, but it's not worth fighting - while the
current stack kernel pointer might be somewhat hard to predict in user
space, it's also not generally going to change for a lot of the call
chains for a particular process.

So just drop it, and mumble some incoherent curses at the compiler.

Tested-by: Martin Knoblauch <spamtrap@knobisoft.de>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoscsi_lib: remove unused variable
Boaz Harrosh [Tue, 19 May 2009 17:54:09 +0000]
scsi_lib: remove unused variable

The last request completion cleanup in scsi_lib left an unused
this_count variable in scsi_io_completion().
(It was used before in a code segment that now uses blk_end_request_all())

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: add warning to blk_make_request()
Jens Axboe [Tue, 19 May 2009 17:52:35 +0000]
block: add warning to blk_make_request()

Add a note about how one needs to be careful when setting up these bio
chains.

Extracted from Boaz's updated patch.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agocifs: fix pointer initialization and checks in cifs_follow_symlink (try #4)
Jeff Layton [Tue, 19 May 2009 13:57:03 +0000]
cifs: fix pointer initialization and checks in cifs_follow_symlink (try #4)

This is the third respin of the patch posted yesterday to fix the error
handling in cifs_follow_symlink. It also includes a fix for a bogus NULL
pointer check in CIFSSMBQueryUnixSymLink that Jeff Moyer spotted.

It's possible for CIFSSMBQueryUnixSymLink to return without setting
target_path to a valid pointer. If that happens then the current value
to which we're initializing this pointer could cause an oops when it's
kfree'd.

This patch is a little more comprehensive than the last patches. It
reorganizes cifs_follow_link a bit for (hopefully) better readability.
It should also eliminate the uneeded allocation of full_path on servers
without unix extensions (assuming they can get to this point anyway, of
which I'm not convinced).

On a side note, I'm not sure I agree with the logic of enabling this
query even when unix extensions are disabled on the client. It seems
like that should disable this as well. But, changing that is outside the
scope of this fix, so I've left it alone for now.

Reported-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Reviewed-by: Christoph Hellwig <hch@inraded.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

10 years agoblock: Un-export blk_rq_append_bio
Boaz Harrosh [Sun, 17 May 2009 16:00:01 +0000]
block: Un-export blk_rq_append_bio

OSD was the last in-tree user of blk_rq_append_bio(). Now
that it is fixed blk_rq_append_bio is un-exported and
is only used internally by block layer.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agolibosd: Use of new blk_make_request
Boaz Harrosh [Sun, 17 May 2009 15:58:41 +0000]
libosd: Use of new blk_make_request

Use new blk_make_request() to allocate a request from bio
and avoid using deprecated blk_rq_append_bio().

This patch is dependent on a block layer patch titled:
    [BLOCK] New blk_make_request() takes bio returns request

This is the last usage of blk_rq_append_bio in osd, it can now
be un-exported.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
CC: Jeff Garzik <jeff@garzik.org>
CC: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: Add blk_make_request(), takes bio, returns a request
Boaz Harrosh [Sun, 17 May 2009 15:57:15 +0000]
block: Add blk_make_request(), takes bio, returns a request

New block API:
given a struct bio allocates a new request. This is the parallel of
generic_make_request for BLOCK_PC commands users.

The passed bio may be a chained-bio. The bio is bounced if needed
inside the call to this member.

This is in the effort of un-exporting blk_rq_append_bio().

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
CC: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agolibosd: Use new blk_rq_map_kern
Boaz Harrosh [Sun, 17 May 2009 15:56:17 +0000]
libosd: Use new blk_rq_map_kern

Now that blk_rq_map_kern will append the buffer onto the
request we can use it easily for adding extra segments
(eg. attributes)

This patch is dependent on a block layer patch titled:
   [BLOCK] allow blk_rq_map_kern to append to requests

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: allow blk_rq_map_kern to append to requests
James Bottomley [Sun, 17 May 2009 15:55:18 +0000]
block: allow blk_rq_map_kern to append to requests

Use blk_rq_append_bio() internally instead of blk_rq_bio_prep()
so blk_rq_map_kern can be called multiple times, to map multiple
buffers.

This is in the effort to un-export blk_rq_append_bio()

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agosplice: fix kmaps in default_file_splice_write()
Miklos Szeredi [Tue, 19 May 2009 09:37:46 +0000]
splice: fix kmaps in default_file_splice_write()

Unfortunately multiple kmap() within a single thread are deadlockable,
so writing out multiple buffers with writev() isn't possible.

Change the implementation so that it does a separate write() for each
buffer.  This actually simplifies the code a lot since the
splice_from_pipe() helper can be used.

This limitation is caused by HIGHMEM pages, and so only affects a
subset of architectures and configurations.  In the future it may be
worth to implement default_file_splice_write() in a more efficient way
on configs that allow it.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agobio: always copy back data for copied kernel requests
Tejun Heo [Tue, 19 May 2009 09:33:06 +0000]
bio: always copy back data for copied kernel requests

When a read bio_copy_kern() request fails, the content of the bounce
buffer is not copied back.  However, as request failure doesn't
necessarily mean complete failure, the buffer state can be useful.
This behavior is also inconsistent with the user map counterpart and
causes the subtle difference between bounced and unbounced IO causes
confusion.

This patch makes bio_copy_kern_endio() ignore @err and always copy
back data on request completion.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: set rq->resid_len to blk_rq_bytes() on issue
Tejun Heo [Tue, 19 May 2009 09:33:05 +0000]
block: set rq->resid_len to blk_rq_bytes() on issue

In commit c3a4d78c580de4edc9ef0f7c59812fb02ceb037f, while introducing
rq->resid_len, the default value of residue count was changed from
full count to zero.  The conversion was done under the assumption that
when a request fails residue count wasn't defined.  However, Boaz and
James pointed out that this wasn't true and the residue count should
be preserved for failed requests too.

This patchset restores the original behavior by setting rq->resid_len
to blk_rq_bytes(rq) on request start and restoring explicit clearing
in affected drivers.  While at it, take advantage of the fact that
rq->resid_len is set to full count where applicable.

* ide-cd: rq->resid_len cleared on pc success

* mptsas: req->resid_len cleared on success

* sas_expander: rsp/req->resid_len cleared on success

* mpt2sas_transport: req->resid_len cleared on success

* ide-cd, ide-tape, mptsas, sas_host_smp, mpt2sas_transport, ub: take
  advantage of initial full count to simplify code

Boaz Harrosh spotted bug in resid_len initialization.  Fixed as
suggested.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Borislav Petkov <petkovbb@googlemail.com>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Eric Moore <Eric.Moore@lsi.com>
Cc: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoub: use __blk_end_request_all()
Tejun Heo [Tue, 19 May 2009 09:33:04 +0000]
ub: use __blk_end_request_all()

ub_end_rq() always tries to complete full request.  The @cmd_len
parameter was there because rq->data_len used to be overwritten with
residue count.  Drop @cmd_len and use __blk_end_request_all().

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoxen/blkfront: fix warning when deleting gendisk on unplug/shutdown
Ian Campbell [Tue, 19 May 2009 06:27:42 +0000]
xen/blkfront: fix warning when deleting gendisk on unplug/shutdown

Currently blkfront gives a warning when hot unplugging due to calling
del_gendisk() with interrupts disabled (due to blkif_io_lock).

WARNING: at kernel/softirq.c:124 local_bh_enable+0x36/0x84()
Modules linked in: xenfs xen_netfront ext3 jbd mbcache xen_blkfront
Pid: 13, comm: xenwatch Not tainted 2.6.29-xs5.5.0.13 #3
Call Trace:
 [<c012611c>] warn_slowpath+0x80/0xb6
 [<c0104cf1>] xen_sched_clock+0x16/0x63
 [<c0104710>] xen_force_evtchn_callback+0xc/0x10
 [<c0104e32>] check_events+0x8/0xe
 [<c0104d9b>] xen_restore_fl_direct_end+0x0/0x1
 [<c0103749>] xen_mc_flush+0x10a/0x13f
 [<c0105bd2>] __switch_to+0x114/0x14e
 [<c011d92b>] dequeue_task+0x62/0x70
 [<c0123b6f>] finish_task_switch+0x2b/0x84
 [<c0299877>] schedule+0x66d/0x6e7
 [<c0104710>] xen_force_evtchn_callback+0xc/0x10
 [<c0104710>] xen_force_evtchn_callback+0xc/0x10
 [<c012a642>] local_bh_enable+0x36/0x84
 [<c022f9a7>] sk_filter+0x57/0x5c
 [<c0233dae>] netlink_broadcast+0x1d5/0x315
 [<c01c6371>] kobject_uevent_env+0x28d/0x331
 [<c01e7ead>] device_del+0x10f/0x120
 [<c01e7ec6>] device_unregister+0x8/0x10
 [<c015f86d>] bdi_unregister+0x2d/0x39
 [<c01bf6f4>] unlink_gendisk+0x23/0x3e
 [<c01ac946>] del_gendisk+0x7b/0xe7
 [<d0828c19>] blkfront_closing+0x28/0x6e [xen_blkfront]
 [<d082900c>] backend_changed+0x3ad/0x41d [xen_blkfront]

We can fix this by calling del_gendisk() later in blkfront_closing, after
releasing blkif_io_lock. Since the queue is stopped during the interrupts
disabled phase I don't think there is any danger of an event occuring between
releasing the blkif_io_lock and deleting the disk.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoxen/blkfront: allow xenbus state transition to Closing->Closed when not Connected
Ian Campbell [Tue, 19 May 2009 06:25:48 +0000]
xen/blkfront: allow xenbus state transition to Closing->Closed  when not Connected

This situation can occur when attempting to attach a block device whose
backend is an empty physical CD-ROM driver. The backend in this case
will go directly from the Initialising state to Closing->Closed.
Previously this would result in a NULL pointer deref on info->gd
(xenbus_dev_fatal does not return as a1a15ac5 seems to expect)

Cc: stable@kernel.org
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoipv4: make default for INET_LRO consistent with help text
Frans Pop [Tue, 19 May 2009 04:48:38 +0000]
ipv4: make default for INET_LRO consistent with help text

Commit e81963b1 ("ipv4: Make INET_LRO a bool instead of tristate.")
changed this config from tristate to bool.  Add default so that it is
consistent with the help text.

Signed-off-by: Frans Pop <elendil@planet.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: fix skb_seq_read returning wrong offset/length for page frag data
Thomas Chenault [Tue, 19 May 2009 04:43:27 +0000]
net: fix skb_seq_read returning wrong offset/length for page frag data

When called with a consumed value that is less than skb_headlen(skb)
bytes into a page frag, skb_seq_read() incorrectly returns an
offset/length relative to skb->data. Ensure that data which should come
from a page frag does.

Signed-off-by: Thomas Chenault <thomas_chenault@dell.com>
Tested-by: Shyam Iyer <shyam_iyer@dell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonfs: Fix NFS v4 client handling of MAY_EXEC in nfs_permission.
Frank Filz [Mon, 18 May 2009 21:41:40 +0000]
nfs: Fix NFS v4 client handling of MAY_EXEC in nfs_permission.

The problem is that permission checking is skipped if atomic open is
possible, but when exec opens a file, it just opens it O_READONLY which
means EXEC permission will not be checked at that time.

This problem is observed by the following sequence (executed as root):

  mount -t nfs4 server:/ /mnt4
  echo "ls" >/mnt4/foo
  chmod 744 /mnt4/foo
  su guest -c "mnt4/foo"

Signed-off-by: Frank Filz <ffilzlnx@us.ibm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
Tested-by: Eugene Teo <eugeneteo@kernel.sg>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agopkt_sched: gen_estimator: use 64 bit intermediate counters for bps
Eric Dumazet [Tue, 19 May 2009 02:26:37 +0000]
pkt_sched: gen_estimator: use 64 bit intermediate counters for bps

gen_estimator can overflow bps (bytes per second) with Gb links, while
it was designed with a u32 API, with a theorical limit of 34360Mbit
(2^32 bytes)

Using 64 bit intermediate avbps/brate counters can allow us to reach
this theorical limit.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobe2net: add two new pci device ids to pci device table
Ajit Khaparde [Mon, 18 May 2009 22:38:55 +0000]
be2net: add two new pci device ids to pci device table

Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agosch_teql: should not dereference skb after ndo_start_xmit()
Eric Dumazet [Mon, 18 May 2009 22:12:31 +0000]
sch_teql: should not dereference skb after ndo_start_xmit()

It is illegal to dereference a skb after a successful ndo_start_xmit()
call. We must store skb length in a local variable instead.

Bug was introduced in 2.6.27 by commit 0abf77e55a2459aa9905be4b226e4729d5b4f0cb
(net_sched: Add accessor function for packet length for qdiscs)

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotcp: fix MSG_PEEK race check
Ilpo Järvinen [Sun, 10 May 2009 20:32:34 +0000]
tcp: fix MSG_PEEK race check

Commit 518a09ef11 (tcp: Fix recvmsg MSG_PEEK influence of
blocking behavior) lets the loop run longer than the race check
did previously expect, so we need to be more careful with this
check and consider the work we have been doing.

I tried my best to deal with urg hole madness too which happens
here:
if (!sock_flag(sk, SOCK_URGINLINE)) {
++*seq;
...
by using additional offset by one but I certainly have very
little interest in testing that part.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Tested-by: Frans Pop <elendil@planet.nl>
Tested-by: Ian Zimmermann <itz@buug.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Mon, 18 May 2009 17:22:04 +0000]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Explicit alignment for .data.cacheline_aligned
  powerpc/ps3: Update ps3_defconfig
  powerpc/ftrace: Fix constraint to be early clobber
  powerpc/ftrace: Use pr_devel() in ftrace.c
  powerpc: Do not assert pte_locked for hugepage PTE entries

10 years agoMerge branches 'sched-fixes-for-linus-2' and 'core-fixes-for-linus-2' of git://git...
Linus Torvalds [Mon, 18 May 2009 17:11:06 +0000]
Merge branches 'sched-fixes-for-linus-2' and 'core-fixes-for-linus-2' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Fix fallback sched_clock()'s offset when using jiffies

* 'core-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  lockdep: increase MAX_LOCKDEP_ENTRIES and MAX_LOCKDEP_CHAINS

10 years ago[ARM] 5517/1: integrator: don't put clock lookups in __initdata
Rabin Vincent [Mon, 18 May 2009 16:26:08 +0000]
[ARM] 5517/1: integrator: don't put clock lookups in __initdata

Remove the __initdata annotation for the clock lookups, since they
will be needed when loading modules which use clk_get().

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

10 years ago[ARM] 5518/1: versatile: don't put clock lookups in __initdata
Rabin Vincent [Mon, 18 May 2009 16:29:30 +0000]
[ARM] 5518/1: versatile: don't put clock lookups in __initdata

Remove the __initdata annotation for the clock lookups, since they
will be needed when loading modules which use clk_get().

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

10 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 18 May 2009 16:17:37 +0000]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Fix performance regression caused by paravirt_ops on native kernels
  xen: use header for EXPORT_SYMBOL_GPL
  x86, 32-bit: fix kernel_trap_sp()
  x86: fix percpu_{to,from}_op()
  x86: mtrr: Fix high_width computation when phys-addr is >= 44bit
  x86: Fix false positive section mismatch warnings in the apic code

10 years agoMerge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 18 May 2009 16:15:41 +0000]
Merge branch 'tracing-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  tracing: Append prompt in /debug/tracing/README file
  x86/function-graph: fix constraint for recording old return value

10 years agoFix oops on close of hot-unplugged FTDI serial converter
David Woodhouse [Mon, 18 May 2009 12:07:35 +0000]
Fix oops on close of hot-unplugged FTDI serial converter

Commit c45d6320 ("fix reference counting of ftdi_private") stopped
ftdi_sio_port_remove() from directly freeing the port-private data, with
the intention if the port was still open, it would be freed when
ftdi_close() is eventually called and releases the last refcount on the
structure.

That's all very well, but ftdi_sio_port_remove() still contains a call
to usb_set_serial_port_data(port, NULL) -- so by the time we get to
ftdi_close() for the port which was unplugged, it _still_ oopses on
dereferencing that NULL pointer, as it did before (and does in 2.6.29).

The fix is just not to clear the private data in ftdi_sio_port_remove().
Then the refcount is properly reduced to zero when the final kref_put()
happens in ftdi_close().

Remove a bogus comment too, while we're at it. And stop doing things
inside "if (priv)" -- it must _always_ be there.

Based loosely on an earlier patch by Daniel Mack, and suggestions by
Alan Stern.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Tested-by: Daniel Mack <daniel@caiaq.de>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agomtd_dataflash: unbreak erase support
Peter Korsgaard [Mon, 18 May 2009 10:13:54 +0000]
mtd_dataflash: unbreak erase support

Commit 5b7f3a50 (fix dataflash 64-bit divisions) unfortunately
introduced a typo. Erase addr and len were swapped in the pageaddr
calculation, causing the wrong sectors to get erased.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoasm-generic: fix local_add_unless macro
Roel Kluin [Mon, 18 May 2009 01:18:58 +0000]
asm-generic: fix local_add_unless macro

`local_add_unless(x, y, z)' will be expanded to `(&(x)->y, (y), (x))', but
`&(x)->y' should be `&(x)->a'

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agomicroblaze: Fix kind-of-intr checking against number of interrupts
Michal Simek [Thu, 14 May 2009 11:35:52 +0000]
microblaze: Fix kind-of-intr checking against number of interrupts

+ Fix typographic fault.

Signed-off-by: Michal Simek <monstr@monstr.eu>

10 years agomicroblaze: Update Microblaze defconfig
Michal Simek [Mon, 11 May 2009 07:24:47 +0000]
microblaze: Update Microblaze defconfig

Signed-off-by: Michal Simek <monstr@monstr.eu>

10 years agovirtio_blk: get rid of unused variable
Jens Axboe [Mon, 18 May 2009 12:44:45 +0000]
virtio_blk: get rid of unused variable

drivers/block/virtio_blk.c: In function 'blk_done':
drivers/block/virtio_blk.c:53: warning: unused variable 'nr_bytes'

Leftover from commit 1cde26f928863d90e9e7c1217880c8450464d305

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agovirtio_blk: SG_IO passthru support
Hannes Reinecke [Mon, 18 May 2009 12:41:30 +0000]
virtio_blk: SG_IO passthru support

Add support for SG_IO passthru to virtio_blk.  We add the scsi command
block after the normal outhdr, and the scsi inhdr with full status
information aswell as the sense buffer before the regular inhdr.

[hch: forward ported, added the VIRTIO_BLK_F_SCSI flags, some comments
 and tested the whole beast]
[axboe: updated to use ->resid and not dual-path the byte count]

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (+ checkpatch.pl tweak)
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agovirtio_blk: don't blindly derefence req->rq_disk
Christoph Hellwig [Mon, 18 May 2009 12:38:28 +0000]
virtio_blk: don't blindly derefence req->rq_disk

request->rq_disk is only set for FS requests or BLOCK_PC requests
originating from the generic block layer scsi ioctls.  It's not set
for requests origination from other soures or internal cache flush
commands implemented by the patch I'll send after this.

So instead of using it to get at the private data in do_virtblk_request
setup queue->queuedata and use it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years ago[ARM] mach-l7200: fix spelling of SYS_CLOCK_OFF
Pavel Roskin [Tue, 12 May 2009 20:36:46 +0000]
[ARM] mach-l7200: fix spelling of SYS_CLOCK_OFF

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

10 years ago[ARM] Double check memmap is actually valid with a memmap has unexpected holes V2
Mel Gorman [Wed, 13 May 2009 16:34:48 +0000]
[ARM] Double check memmap is actually valid with a memmap has unexpected holes V2

pfn_valid() is meant to be able to tell if a given PFN has valid memmap
associated with it or not. In FLATMEM, it is expected that holes always
have valid memmap as long as there is valid PFNs either side of the hole.
In SPARSEMEM, it is assumed that a valid section has a memmap for the
entire section.

However, ARM and maybe other embedded architectures in the future free
memmap backing holes to save memory on the assumption the memmap is never
used. The page_zone linkages are then broken even though pfn_valid()
returns true. A walker of the full memmap must then do this additional
check to ensure the memmap they are looking at is sane by making sure the
zone and PFN linkages are still valid. This is expensive, but walkers of
the full memmap are extremely rare.

This was caught before for FLATMEM and hacked around but it hits again for
SPARSEMEM because the page_zone linkages can look ok where the PFN linkages
are totally screwed. This looks like a hatchet job but the reality is that
any clean solution would end up consumning all the memory saved by punching
these unexpected holes in the memmap. For example, we tried marking the
memmap within the section invalid but the section size exceeds the size of
the hole in most cases so pfn_valid() starts returning false where valid
memmap exists. Shrinking the size of the section would increase memory
consumption offsetting the gains.

This patch identifies when an architecture is punching unexpected holes
in the memmap that the memory model cannot automatically detect and sets
ARCH_HAS_HOLES_MEMORYMODEL. At the moment, this is restricted to EP93xx
which is the model sub-architecture this has been reported on but may expand
later. When set, walkers of the full memmap must call memmap_valid_within()
for each PFN and passing in what it expects the page and zone to be for
that PFN. If it finds the linkages to be broken, it assumes the memmap is
invalid for that PFN.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

10 years agoregulator: da903x: add missing __devexit_p()
Mike Frysinger [Fri, 15 May 2009 18:50:33 +0000]
regulator: da903x: add missing __devexit_p()

The remove function uses __devexit, so the .remove assignment needs
__devexit_p() to fix a build error with hotplug disabled.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Liam Girdwood <lrg@slimlogic.co.uk>
CC: Mike Rapoport <mike@compulab.co.il>
CC: Eric Miao <eric.miao@marvell.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

10 years agopowerpc: Explicit alignment for .data.cacheline_aligned
Benjamin Herrenschmidt [Sun, 17 May 2009 18:29:03 +0000]
powerpc: Explicit alignment for .data.cacheline_aligned

I don't think anything guarantees that the objects in data.page_aligned
are a multiple of PAGE_SIZE, thus the section may end on any boundary.

So the following section, .data.cacheline_aligned needs an explicit
alignment.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

10 years agopowerpc/ps3: Update ps3_defconfig
Geoff Levand [Fri, 15 May 2009 08:01:59 +0000]
powerpc/ps3: Update ps3_defconfig

Refresh and set these options:

 CONFIG_SYSFS_DEPRECATED_V2: y -> n
 CONFIG_INPUT_JOYSTICK:      y -> n
 CONFIG_HID_SONY:            n -> m
 CONFIG_RTC_DRV_PS3:         - -> m

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>